thousands of law enforcement officers and federal troops from around the country will be on hand to make sure everyone is safe. >> today's swearing in on the steps of the u.s. capitol is ceremonial, held for the public. the constitution requires that the official swearing in take place on january 20th. >> i barack obama do solemnly swear. >> reporter: the president was officially sworn into office yesterday in a small ceremony at the white house. he followed that up with a candlelight ceremony sunday night where he said today's parties are not about him. >> what we're celebrating is not the election or swearing in of a president. what we're doing is celebrating each other. >> reporter: and he talked about what he called the most significant event of the inaugural weekend, his wife's new haircut. >> i love her bangs. she looks good. >> reporter: the celebrations won't end until late monday night when they attend three different inaugural balls. >> among all the events happening today is fabulous entertainment. beyonce will sing the national anthem and kelly clarkson, my country tis of the